Nishikawa Internal Medicine Clinic, located in Shimonoseki City, Yamaguchi Prefecture, is a medical facility specializing in internal medicine. The clinic offers comprehensive internal medicine services ranging from lifestyle disease treatment to cutting-edge transnasal endoscopy, ultrasound, and diagnostic imaging, covering everything from cancer treatment to anti-aging. Specialties include general internal medicine, gastroenterology, respiratory medicine, radiology, diagnostic imaging, osteoporosis, headache clinic, cough clinic, sleep apnea treatment, diabetes clinic, various health screenings, aesthetic medicine, and the Books Diet for obesity treatment. Featured treatments include garlic injection for fatigue recovery, Nishikawa-style placental therapy based on theories refined by the Japan Anti-Aging Medicine Society, skin-beautifying injection series, detox glutathione, AGA treatment, and plasmalogen supplementation for dementia prevention. A 10-minute IV drip series is also available without appointment. The facility is equipped with parking and barrier-free access. The clinic is registered as a Shimonoseki City specific health check-up provider, stomach cancer screening provider, hepatitis screening provider, colorectal cancer screening provider, certified plasmalogen sales facility for dementia treatment, and certified Books Diet facility. Operating hours are 9:00-12:30 Monday through Saturday, and 2:00-6:00 Monday through Wednesday and Friday; the clinic is closed on Sundays and holidays.